Work-support for lasting-machines.



J. E. CRISP.

WORK SUPPORT FOR LASTING MACHINES.

APPLICATION FILED JAN. 28, 1898.

2 SHEETS-SHEET 1.

Wm-M55555 INV tI DR 7' 5 PK 2 W I I I i COLUMBIA PLANDGRAPH co,,\vAsmNcTON, D. c.

Patented J an. 6, 1914.

J. E. CRISP.

WORK SUPPORT FOR LAsTlNG MACHINES.

APPLICATION FILED JAN. 28, 1898.

' 1,083,596. Patented Jan.6,1914.

2 SHEETS-SHEET 2.

COLUMBIA PLANOGRAPH (20-, WASHINGTON. u. c.

UNITED STATES PATENT OFFICE.

JOSEPH E. CRISP, 0F SOMERVILLE, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

Specification of Letters Patent.

Patented Jan. 6, 1914.

Original application filed December 6, 1894, Serial No. 531,031. Divided and this application filed January 28, 1898. Serial No. 668,340.

To all whom it may concern Be it known that I, JOSEPH E. CRISP, citizen of the United States, residing at Somerville, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Work-Supports for Lasting-Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The present invention relates to work supports for lasting machines. and more particularly to an improved last supporting jack and upper clamping and conforming mechanism, arranged to hold the last and the upper thereon while the edge of the upper is being secured to the insole, and constitutes a division of my application filed Dec. 6, 1894, #5310s1.

The object of the present invention is to produce a last supporting jack of simple form and arrangement, and to combme therewith clamping devices arranged to clamp and conform the upper to the toe and heel of the last, and to so'arrange the clamping devices that they will automatically conform to lasts, either rights or lefts and correctly shape and clamp the upper to the ends thereof.

To the above end, the present invention consists of the devices and combination of devices which will be hereinafter described and claimed.

The present invention is illustrated 1n the accompanying drawings in which,

Figure 1 shows the same in longitudinal section, and Fig. 2 shows a plan view thereof. Fig. 3 is a plan of the toe clamping devices; Fig. 4 is an elevation of the same, and Fig. 5 is a front elevation of the lowenpart of the same looking to the right of Fig. 4.

Similar characters of reference refer to corresponding parts throughout the several views of the drawings.

In the drawings 12 represents a suitable base or standard, which may be constructed in any suitable or convenient manner to support the working parts of the machine. In the drawings said plate 12 is shown as having upwardly projecting ribs 13 (one only being shown) upon the upper edges of wh ch is a plate 14, provided with lnwardly 1nclined ribs 15, the inner faces of which form a dovetail guideway 15* which extends along the longitudinal center of the plate 14 for nearly the length of said plate. Fitted to slide along this guideway 15* are suitable blocks 16, 17 and 18 upon which are carried the heel and toe clamps and the jack post and toe rest, as will be hereinafter described.

The heel and toe clamps 19 and 20 are preferably thin blades or plates which approximately conform to the ends of the last at the toe and heel and are each provided with a flange at their lower parts by which they are removably secured in any suitable manner to the pivoted wings 21, and they are so fixed upon the wings 21 that their central point of contact is coincident with the center of motion of said wings. The clamps 19 and 20 are changed for variations of style of toe and heel, but not for variations of length of lasts of the same style.

The wings 21 are fixed to semicylindrical stems 21 which are mounted by means, of sleeves 21 to swing on pivots 22 which are fixed in the standards 23and 24, projected vertically from the slide blocks 16 and 18. Projecting from the stems 21, are the arms 25, the inner faces of which diverge from each other and have rounded ends, the arrangement being such that a suitable device may be forced between the arms 25, forcing them apart and causing the wings 21 to turn on the pivot 22 to close the clamps 19 and 20 upon the ends of the last, firmly clamping the upper thereto.

The mechanism for actuating the clamps in the machine of the drawing is of the following construction and arrangement. Fixed to the top of the plate 14: are the stands 26, provided with suitable bearings in which are mounted to turn, but fixed from longitudinal movement therein, the right and left screws 27 The screws 27 are geared together as shown in Fig. 2, to turn in unison, and are provided with means such as a square taper spindle to be engaged and actuated by a crank. These screws 27 engage nuts 28 which are pivoted at 29 to the swinging levers 80, pivoted at 31 to the slide blocks 16 and 18, so that a rotation of the screws will swing levers 30 in the blocks 16 and 18. The lower ends of the levers 30 are fitted in suitable bearings 80* in the blocks 16 and 18, the walls of said bearing acting vas stops to limit the swinging motion of the blocks 16 and 18 to move along the guideway' 15* toward or away from each other. Fixed to the upper ends of the levers 30 are the rounded pins or bearings 32 upon which are loosely mounted the rolls 33, the holes in which are preferably larger than the hearings or pins 32, allowing considerable lost motion of the rolls 33, so that they may assume an eccentric position when the clamps are acting upon crooked lasts in order that said clamps may conform to the ends of the lasts of varying swing or lateral curvature. The clamps thus have a differential action, the jaws engaging the last by relative movements difiering according to the form of the last.

The above described mechanism is such that when the screws 27 are actuated to draw the levers 30 toward each other, the rolls 33 upon the upper ends of said levers engage between the arms25 of the clamps 19 and 20, forcing said arms apart and closing the clamps l9 and 20 around the ends of the last, the play of the rolls 33 upon their bearings allowing the clamps 19 and 20 to automatically adjustthemselves to lasts which have considerable swing or lateral inclination of the toe, or to right and left lasts, as the case might be.

In order that the clamps 19 and 20 may remain open during the movement of the slide blocks 16 and 18 toward and away from the last and until they have reached the ends of the last, I have arranged suitable springs 24* in seats or pockets 34 in the upper ends of the standards 23 and 24, the outer ends of said springs 24* engaging the upper ends of the levers 30, tending normally to force said levers 30 away from the standards 23 and 24:, the backward movement of the levers 30 being so limited by contact with the ends of the slots 30*, that when forced back to their full extent, the

clamps 19 and 20' may be opened to receive the largest last of the series they were designed to operate upon. By this arrangement of mechanism, the clamps 19 and 20 remain open during the movement toward and from the last by the action of the springs 24?, removing the rolls 33 from contact with the arms 25, and the clamps can be moved back and forth from and toward the last open, the tension of springs 24c being sufiicient to prevent the levers 30 from swinging toward the clamps during the movement of the blocks 16 and 18 toward the last to bring the rolls 33 thereon in coni tact with the arms 25, until said blocks 16 levers 30 toward the last against the tension of springs 24 causing the rolls 33 to engage the arms 25 and close the'clamps around the lasts. The centers of theclamps are centrally fixed with relation to the longitudinal center line of the base plate, and they always bring the centers of the toe and heel of the last co-incident therewith, regardless of the longitudinal swing of the ast.

Upon a slide block 17 placed between the block 16 and 18, is a stand 34 upon'one end of which is arranged the toe rest 25*, said toe rest being arranged to slidethereon for longitudinal adjustment, and upon the other end of said stand 341 is arranged the jack 1 post and pin 36, which is adapted to swing laterally upon a pivot 36*.

The slide blocks 16, 17, and 18 are all fitted to move freely along the guideway 15* and to maintain the blocks in proper position relatively to each other, I have provided springs 37 and 38 which are fitted in bearings 38* in the. blocks 16, 17 and 18.

The relative tension of the springs 37 and 38 is preferably such that as the clamps 19 and 20 are moved by the screws 27 toward the last upon the jack pin, the heel clamp will come into contact with the last first, causing the toe of the last to be forced down against the toe rest, whereby the upper will be first clamped upon the last at the heel and can then be'pulled up and adjusted at the toe, prior to the further movement of the clamps, to cause the toe clamps to engage the upper on the last, and when these clamps are finally brought into contact with the ends of the last and closed thereabout, the upper will be accurately con-- the last or the outer sole in the case of lasting turns and the counters and quarters of the upper pulled up and correctly adj usted, whereupon the screws 27 are further turned, causing the heel clamp 19 to be closed around the heel end of the last, and the center of the toe clamp 20 to contact with the center of the upper at the toe of the last. The toe of the upper is then pulled up and properly adjusted and the screws 27 given a final turn, which causes the heel and toe clamps 19 and 20 to firmly clamp the upper on the toe and heel against the last, and conform it thereto, the last be-' coming as it were, an inner clamping memher and the clamps 19 and 20, an outer clamping member to hold the upper and the insole in position during the subsequent operation of lasting. After the last and upper have been jacked as described, the edge of the upper at the toe and heel may be turned down and secured to the sole by any suitable mechanism.

It is to be noted that by pivoting the clamps 19 and 20, whereby they are arranged to swing angularly with relation to the axis of the last, and by arranging the closing mechanism thereof for the eccentric engagement of the wings 21, such clamps are adapted to automatically swing to one side or the other, upon contact with the toe or heel of the last, or upon closing of said clamps, to automatically conform thereto whether the last be a right or left last, or whether it be a straight last or a last having considerable swing or lateral inclination.

Having described the construction and mode of operation of my invention, I claim as new and desire to secure by Letters Patent of the United States 1. In a lasting machine the combination with a last support of an end clamp having operating surfaces on opposite sides of the medial line of the last, and pivotally mounted so as to swing about an axis passing approximately through the center of the end of the last to adjust itself to the angular swing of the last, substantially as described.

2. In a lasting machine the combination with a last support of heel and toe clamps, each of said clamps being pivotally mounted so as to swing about an axis substantially perpendicular to the last bottom to adjustitself to the swing of the last, substantially as described.

8. In a lasting machine, the combination of a clamp support, a pivot pin mounted thereon, and an end clamp swinging free upon the pivot pin, the axis of the pivot pin alining with the central point of contact between the clamp and the end of the last, substantially as described.

4. In a lasting machine, the combination, with a last support, of a laterally swinging end clamp comprising two pivoted jaws arranged to clamp the upper around the end of a last on said support, diverging arms upon the rear end of said jaws, and an automatic laterally shifting device arranged to act upon said arms to close the clamp, substantially as described.

5. In a lasting machine, the combination, with a last support, of a pivoted end clamp arranged to clamp the upper around the end of a last on the last support, diverging arms upon the clamp jaws, and a loosely held roller arranged to act on the diverging arms to close the clamp, substantially as described.

6. In a lasting machine, the combination, with a last support, of end clamps arranged to clamp and shape the upper around the ends of a last on said support, and connected mechanism for successively actuating the end clamps, substantially as described.

7. In a lasting machine, the combination, with a last support, of end clamps arranged to clamp the upper around the ends of the last on said support, and yielding mechanism for successively actuating the end clamps, substantially as described.

8. In a lasting machine, the combination, with a last support, of end clamps arranged to clamp the upper around the ends of a last on said support, and connected mechanism, including springs of different strength, for actuating the end clamps, con structed and arranged to bring one of the clamps into contact with the end of the last before the other, substantially as described.

9. In a lasting machine, the combination, with a last support, of end clamps movable toward and from said support, and connected mechanism for moving the end clamps simultaneously but at different rates of speed and for maintaining the desired relative positions of the last support and the end clamps, substantially as described.

10. In a lasting machine, the combination with a last support and end clamps arranged to clamp the upper around the ends of the last 011 said support, of independent slide blocks upon which the last support and end clamps are mounted, and connected mechanism arranged to relatively adjust the positions of the slide blocks and the end clamps and last support carried thereby, substantially as described.

11. In a lasting machine, the combination, with a last support, of end clamps constructed and arranged to clamp the upper against the ends of a last on the last support and mounted to move so as to conform to the swing of the last, and means acting automatically to bring the clamps successively in contact with the last, substantially as described.

12. In a lasting machine, the combination, with a last support, of end clamps constructed and arranged to clamp the upper against the ends of a last on the last support and mounted to move so as to conform to the swing of the ends of the last, slides carrying the end clamps, and connected mechanism arranged to simultaneously actuate the slides, substantially as described.

13. I11 a lasting machine the combination with a last support of an end clamp having operating surfaces on opposite sides of the medial line of the last and mounted for lateral movement, means for moving the clamp into contact with the last on the last support, and means rendered operative by the resistance offered by the last to the lateral movement of the clamp for closing the op posed operating surfaces of the clamp upon the end of the last, substantially as described.

14. In a lasting machine, the combination, with a last support, of clamps to clamp the upper around the last on said support, slides, movable toward and from the last, upon which the clamps are mounted, standards mounted on the slides, means carried by the standards to close the clamps, and mechanism connected with the standards for moving the slides and closing the clamps, substantially as described.

15. In a lasting machine, the combination, with a last support, of pivoted end clamps for clamping the upper against the ends of a last on said support, movable supports for the end clamps, mechanism for moving the supports, and yielding connections between the supports and their actuating mechanism arranged to move the supports toward and from the last and to close the end clamps, substantially as described.

16. In a lasting machine, the combination, with a last support, of pivoted end clamps arranged to clamp the upper around the ends of a last on said support, slides upon which the end clamps are mounted, pivoted levers upon the slides, means on the levers to close the end clamps, mechanism connected with the levers for actuating the slides, and springs interposed between the levers and the slides, substantially as described.

17. In a machine for lasting boots and shoes, a last support, toe and heel clamps and means to actuate the toe and heel clamps, the last support and the toe and heel clamps being loosely mounted to move laterally so as automatically to permit alinement of the last relatively to the toe and heel clamps as an incident to the operation of the latter, substantially as described.

18. In a machine for lasting boots and shoes angularly adjustable end clamps for each end of the last, and a last support, one of said members being laterally movable to permit the last support and the end clamps to be relatively moved by the last to bring the alinement of the end clamping devices and the ends of the last into substantial correspondence, substantially as described.

19. In a machine for lasting boots and shoes angularly adjustable end clamps for each end of the last, and a last support, the last support being laterally movable to permit the last to move laterally so as to aline the clamps with the ends of the last, substantially as described.

20. In a lasting machine, the combination of end clamps, a heel support and a toe support slidalole toward and from the heel support, the heel support being arranged to swing laterally but not longitudinally with relation to the last, substantially as described.

21. In a lasting machine, the combination with end clamps for conforming the upper to theends of the last, of a toe support movable longitudinally with respect to the last and independently of the end clamps, and a last support pivotally mounted to swing laterally but not longitudinally with respect to the last, substantially as described.

22. In a lasting machine, the combination with end clamps for conforming the upper to the ends of the last of a toe support movable longitudinally with respect to the last, and a last support pivotally mounted to swing laterally but not longitudinally with respect to the last, substantially as described.

23. In a lasting machine, the combination, with a last support, of an end clamp comprising two clamp aws pivoted upon a common axis so as to swing toward and from the end of a last on the last support, and means for controlling the end clamp constructed and arranged to cause a relative movement of the clamp jaws about their axis to move them nearer together so as to clasp the end of the last, while permitting a substantially free lateral movement of the end clamp as a whole to adjust itself to the swing of the last, substantially as described.

24-. In a lasting machine, the combination, with a last support, of an end clamp comprising two clamp jaws pivotally mounted to move toward and from the end of a last and means for retaining the jaws in fixed relative position when in engagement with a last, the end clamp as a whole being angularly adjustable to conform to the swing of the last, and means for actuating the end clamp to cause it to engage and clasp the end of the last, said means operating substantially without interference with the angular adjustment of the end clamp, substantially as described.

25. In a lasting machine, the combination,

with a last support, of an end clamp comprising two clamp jaws and a common pivotal support for the clamp jaws, and clamp actuating means acting both to move the pivotal support and the clamp jaws longitudinally with respect to the last and to swing the jaws on the pivotal support to cause them to clasp the last, the actuating means being constructed to control the distance between the jaws while permitting angular movement of the jaws in unison to conform to the swing of the last, substantially as described.

26. In a lasting machine, the combination, with a last support, of an end clamp 1nounted to move laterally as a whole, means for moving the clamp into contact with the last on the last support, and means rendered operative by the resistance of the last to movement of the clamp for closing the clamp upon the end of the last, said means being constructed and arranged to operate without substantially interfering with the lateral movement of the clamp, substantially as described.

27. In a lasting machine, the combination with a last support of a device for conforming the upper to the end of the last having surfaces operated on opposite sides of the medial line of the last, said device being mounted to swing laterally about an axis passing approximately through the center of the end of the last to adjust itself to the last when engaged thereby.

28. In a lasting machine the combination with a last support of clamp carrying members movable toward and from the heel and toe of the last, clamp jaws mounted on each clamp carrying member to swing in unison toward either side to adjust themselves laterally to the last, and means for moving the jaws of the clamps toward and from each other, substantially as described.

29. In a lasting machine, the combination with a last support of an end clamp having surfaces operating on opposite sides of the medial line of the last, said clamp being mounted to swing toward either side about an axis passing approximately through the center of the end of the last to adjust itself to the swing of the last when engaged thereby.

30. In a lasting machine the combination with a last support of an end clamp having surfaces operating on opposite sides of the medial line of the last for conforming the upper to the end of the last said clamp being pivotally mounted to swing about an axis passing through the line of contact between the clamp and end of the last, substantially as described.

81. In a lasting machine the combination with a last support of devices for conforming the upper to the end of the last mounted to swing in unison toward either side about an axis lying in the plane which passes approximately through the center of the end of the last, substantially as described.

32. In a lasting machine the combination with a last support of devices for conforming the upper to the toe and heel of the last, the devices at one end of the last being mounted to swing laterally in unison toward either side about an axis passing approximately through the center of the end of the last, substantially as described.

In testimony whereof I aflix my signature, in presence of two witnesses.

JOSEPH E. CRISP.

Witnesses:

A. E. WHYTE, Cl KITOHING.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

